Multiple-valve grinder



' J. J. KILBRIDE MULTIPLE VALVE GRINDER Filed 10. 25

' INVENTOR @Eh Ilfilbricie 1 I BY F ATT ORNEYS Patented Aug. 24, 1926.

v 1,597,601" am OFFECE.

JOHN T. KILBRIDE, OF NEW 'YQRKQN. Y.

MULTIPL -VALVE enrunnn.

Application filed July 10, 1925. Serial No.- 42,803.

This invention relates to valv'egrinders, and has particular reference to a valve grmdmg device for an The principal object of the present inventomobile engines.

6 tion is to provide an improved Valve ill by means offgrinder which the entire set valves of a motor may be simultaneously ground in one operat ion, thereby effecting economy both in timea-nd labor More specifically the invention pomprehends a multiple valve grinder WhlCll consists of an el ement for coupling the valves of a complete set to each other, whereby the valves are si which the co multaneously ground, and in upling means preferably consists of a slotted element or bar which carries a plurality of relatively adjustable valve-engaging elements, whereby the devlce is capable of sets which are use in connection with valve variously spaced.

It is a further object of the invention to make the va Ive-engaging elements adjustable to bring the connecting bar closer to or farther from the valve heads.

The invention furthermore comprehends a multiple valve grinder which is comparatively simple in its construction and mode of operation, inexpensive to manufacture, and which is highly efiicient in its purpose.

With the above and other objects in view,

reference is had to the following specification and drawings in which there 1s exhlbited certain the invention as limitation examples or embodiments of which are in no way intended s upon the scope of the appended claims as it is to be clearly understood that which properly claimsmay be 0 pedient.

variations and modifications fall within the scope of sand resorted to when found ex- In the drawings Figure 1 is a longitudinal sectional view illustrating the valve grinder in use;

Fig. 2 is a of- Fig. 3 is a fragmentary plan view thereplan view illustrating a pair of valve-grindlngdevices coupled in ganged relation for use in connection with valve sets including a large number of valves;

Fig. 4 is a detail transverse sectional view on an enlarged scale;

Fig. 5 is a side View of a slightly modified adaptation of the invention.

Referring to the drawings by characters of reference, valve couplin the valve grinder comprises a g member which in the preferred embodiment or example of the invention, is in the nature of an elongated bar having a longitudinal central slot 11, the lower portion 12 of which. is of greater wldth than the upper portion, to afford a seat for'a plurality of which the stems 14 are threaded, the lower unthreaded extremities 15 of which project below and are engageable within the usual dlametrically spaced openings A in the valve head B, whereby they constitute valveengaglng means. The upper portions of the threaded stems 14 project above the bar 10 and extend through washers 16, after ',which thumb nuts l7 are applied for the purpose of holding or clamping the valve-engagin extremities 15 in relativel spaced relation within the slotted bar 10 it will be further noted that by threading the stems 14 through the nuts 13, vertical adjustment of the stems 14 with respect to the bar 10 may be effected for the purpose of adjustably projectin the stem terminals under si e of the bar 10, to dispose said bar closer to or farther from the valve heads. At its opposite ends the bar 10 isprovided with upwardly projecting manlpulating handles 18 for the purpose of effecting rota tory movement ofthe valve heads to accomplish the grinding operation. The handles nuts 13, through 15 from the i 18 are preferably detachably associated with,

- ments where the valve set consists of eight,

twelve, or more valves.

In the present instance the coupling means is illustrated as interengaging dovetails 21 and 22 at the opposite ends of the bar, which are approximately half the thickness of the bar with an underlying shelf 23. In order to prevent disengagement of the dovetails, clip elements 24 fasten the dovetails in interengaging relation by anchoring screws 25.

In some instances the valve heads C, as illustrated in Fig. 5, are formed with an elongated recess ly disposed openings A as in Fig. 4, and in, order to compensate for this variation plates D in lieu of the diametricaL.

provided, ad-

I adjusted relative yto each other to coincide .sarily partake of with the spacing of the valves B by loosening the thumb nuts 17 and registering the terminals 15 with the openings A of the valves, after which the thumb nuts are tightened to maintain the adjustment. With the terminals 15 engaging within the openings of the valves of the set, the handles 18 are manipulated to effect a rotary movement for grinding the valves in unison.

Where the set includes a greater number than four valves, an additional bar or bars 10 are added by coupling the stems to each other as set forth and illustrated in Fig. 3.

From the foregoing it will thus be seen that a multiple valve grinder has been designed, which is extremely simple both in its construction and mode of operation, and which is comparatively inexpensive to manufacture.

What is claimed is:

1. A multiple valve grinder, comprising a bar havin a plurality of relatively adjustable va ve-engaging elements eccentricallyengaging and coupling the valves, said elements connected to the bar to necescircular movements upon attempted reciprocations of the bar, and means on the bar for facilitating reciprocatory movement of the bar to simultaneous- 1y grind the valves.

2. A multiple valve grinder, comprising a longitudinally slotted bar, a plurality of valve-engaging elements mounted in the slotted portion for relative adjustments and fixed to said bar f r rotary movements upon attempted reciprocations of the bar, and means thereon for facilitating movement of the bar to simultaneously grind the valves.

3. A multiple valve grinder, comprising a longitudinally slotted bar, a plurality of valve-engaging elements adapted to eccentrically engage the valves and mounted in the slotted portion for relative adjustment 60 and fixed thereto in such a manner as to necessarily partake of circular movemen s upon attempted reciprocations of the bar, means for retaining said elements in relatively adjusted relation, and manipulating means on the bar for facilitating rotary movement of the bar to simultaneously grind the valves.

4. A multiple valve grinder, comprising a member and means thereon for facilitating movement of the member to simultaneously grind the valves, a plurality of valve-engaging elements adapted to eccentrically engage the valves mounted on the member for relative adjustment and fixed thereto in such a manner as to necessarily partake of circular movements upon attempted reciprocations of the member, said member having means at its opposite ends adapted for interengagement with similar means on another mem- 7 bar, whereby to increase the length of the valve grinder to accommodate valve sets including a greater number of valves.

5. A multiple valve grinder, comprising a longitudinally slotted bar, a plurality of 7 5 valve-engaging elements adapted to eccentrically engage the valves, said valves being fixed to the bar in such a manner as to necessarily partake of circular movements of the bar, means longitudinally adjustable in the slotted portion through which the valve-engaging elements are vertically adjusted, a common means for holding the valve-engaging elements and said first-mentioned means in relatively adjusted position with respect to each other and to the bar, and manipulat-ing means on said bar for facilitating rotatory movement of the bar whereby to simultaneously grind the valves.

J OHN J. KILBRIDE. 

